Scheduler: -mm vs -staircase

[J.A. Magallon]

Hi all...

Just a comment about a weird thing I have noticed wrt scheduling in latest
kernels.

My last two tests are 2.6.7-mm2 and 2.6.7-mm2+staircase-7.4 (plus a couple
other things, like aic updated driver). I use GLMatrix as screensaver,
running with nVidia drivers (yup, tainted kernels, but both are tainted ;)).
What I have noticed:
- With standard -mm, as GLMatrix runs, the framerate drops even to something
  like a frame every couple seconds
- With staircase, it keeps running smoothly at 25fps.

Something is strange in -mm. It keeps stoling cycles to the screensaver.
Is this expected ?

TIA

--
J.A. Magallon <jamagallon()able!es>     \               Software is like sex:
werewolf!able!es                         \         It's better when it's free
Mandrakelinux release 10.1 (Cooker) for i586
Linux 2.6.7-jam5 (gcc 3.4.1 (Mandrakelinux (Cooker) 3.4.1-0.3mdk)) #1

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